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libperf: Add perf_cpu_map__for_each_cpu() macro

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Add the following macro to libperf:

  perf_cpu_map__for_each_cpu()

And its related functions:

  perf_cpu_map__cpu()
  perf_cpu_map__nr()

That will allow hiding how it is implemented.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190721112506.12306-67-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2019-07-21 13:24:53 +02:00 committed by Arnaldo Carvalho de Melo
parent a00571fda6
commit 09145d26b6
3 changed files with 22 additions and 0 deletions
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13
tools/perf/lib/cpumap.c
View File

@ -224,3 +224,16 @@ struct perf_cpu_map *perf_cpu_map__new(const char *cpu_list)
out:
return cpus;
}
int perf_cpu_map__cpu(const struct perf_cpu_map *cpus, int idx)
{
if (idx < cpus->nr)
return cpus->map[idx];
return -1;
}
int perf_cpu_map__nr(const struct perf_cpu_map *cpus)
{
return cpus ? cpus->nr : 1;
}

7
tools/perf/lib/include/perf/cpumap.h
View File

@ -12,5 +12,12 @@ LIBPERF_API struct perf_cpu_map *perf_cpu_map__new(const char *cpu_list);
LIBPERF_API struct perf_cpu_map *perf_cpu_map__read(FILE *file);
LIBPERF_API struct perf_cpu_map *perf_cpu_map__get(struct perf_cpu_map *map);
LIBPERF_API void perf_cpu_map__put(struct perf_cpu_map *map);
LIBPERF_API int perf_cpu_map__cpu(const struct perf_cpu_map *cpus, int idx);
LIBPERF_API int perf_cpu_map__nr(const struct perf_cpu_map *cpus);
#define perf_cpu_map__for_each_cpu(cpu, idx, cpus) \
for ((idx) = 0, (cpu) = perf_cpu_map__cpu(cpus, idx); \
(idx) < perf_cpu_map__nr(cpus); \
(idx)++, (cpu) = perf_cpu_map__cpu(cpus, idx))
#endif /* __LIBPERF_CPUMAP_H */

2
tools/perf/lib/libperf.map
View File

@ -6,6 +6,8 @@ LIBPERF_0.0.1 {
perf_cpu_map__put;
perf_cpu_map__new;
perf_cpu_map__read;
perf_cpu_map__nr;
perf_cpu_map__cpu;
perf_thread_map__new_dummy;
perf_thread_map__set_pid;
perf_thread_map__comm;